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Math activity

Lemonade Stand Simulator

Run a pretend lemonade stand for family. Count quarters, learn that 4 quarters make a dollar, and hand out the right number of coins for each cup.

Real World MissionAbout 45 minutesScreen-freeParent help expected

Materials and setup

How this changes by age

Pre-K (ages 3–4)

Run a pretend lemonade stand for family. Count quarters, learn that 4 quarters make a dollar, and hand out the right number of coins for each cup.

Difficulty 1 of 3

Steps

  1. Set out a small pile of quarters (real or play). Show your child: '4 quarters make 1 dollar.'
  2. Set up a pretend stand on the table. Each cup of lemonade costs 1 quarter.
  3. A family member 'buys' a cup. Your child counts out 1 quarter and hands over a cup.
  4. Try a bigger order: 'I want 4 cups, here is a dollar.' Trade the dollar for 4 quarters and back again.
  5. Stack the quarters into groups of 4 and count how many dollars you 'earned' at the end.
  6. Tell a grown-up one thing that surprised you.

Learning objectives

  • Recognize a quarter and know that 4 quarters equal 1 dollar
  • Count up to 10 coins one at a time
  • Practice trading coins for goods in a pretend purchase

Kindergarten (ages 5–6)

Run a pretend lemonade stand with a parent as your customer. Take orders, count sales with simple addition, and tally how many cups you sold.

Difficulty 2 of 3

Steps

  1. Set up your stand with a sign: 'Lemonade $1 a cup.' Use play money or real coins.
  2. Parent walks up and orders. Sometimes 1 cup, sometimes 2. Count out the right change every time.
  3. Make a tally sheet on paper. Mark a tally for each cup sold.
  4. For 2-cup orders, add: '$1 + $1 = $2.' Say it out loud as you take the money.
  5. After 10 'customers,' count the tallies and count the money. Do they match?
  6. Tell a grown-up one thing that surprised you.

Learning objectives

  • Add small money amounts within $5
  • Keep a running tally of sales
  • Practice handling money in a pretend transaction

Early elementary (ages 6–8)

Run a real or pretend lemonade stand with real costs. Calculate how many cups you must sell to cover supplies, then how many to make a $5 profit.

Difficulty 2 of 3

Steps

  1. Write down your supplies and what they cost: lemons $2, sugar $1, cups $1. Total supply cost: $4.
  2. You will sell each cup for $0.50. How many cups do you have to sell just to get your $4 back? (This is called 'breaking even.') Show the math.
  3. Now: how many cups do you have to sell to make a $5 profit on top of breaking even? Show the math.
  4. Run the stand for 30 minutes (real or pretend) and track every cup sold on a tally sheet.
  5. At the end, calculate: total revenue, minus supply cost, equals profit. Did you hit your goal?
  6. Talk about it: what could you change next time to sell more cups?
  7. In one sentence, tell a parent or sibling what surprised you today.

Learning objectives

  • Calculate a break-even point from fixed costs and unit price
  • Use multiplication and subtraction to find profit
  • Track real sales data and compare it to a goal

Upper elementary (ages 8–10)

Run a 2-day A/B price test on a lemonade stand. Track units sold, calculate revenue and profit at each price, and write a recommendation grounded in your data. Learn the word 'elasticity.'

Difficulty 3 of 3

Steps

  1. Day 1: charge $0.50 per cup for exactly 1 hour. Day 2: charge $1.00 per cup for exactly 1 hour. Same location, same time of day, same lemonade.
  2. Make a data table with columns: Day, Price, Cups Sold, Revenue, Supply Cost, Profit.
  3. Calculate revenue for each day (price x cups sold). Subtract supply cost to get profit per day.
  4. Compare: which price made more total profit? Was it the price with the most cups sold?
  5. Introduce elasticity plainly: 'Elasticity means how much demand changes when the price changes. If doubling the price cut sales in half, demand was elastic.' Did your customers behave that way?
  6. Write a one-sentence recommendation: 'I should price at $___ because ___,' using a number from your data as evidence.
  7. Stretch: predict what would happen at $0.75. Why?
  8. In one sentence, tell a parent or sibling what surprised you today.

Learning objectives

  • Design and run a simple A/B test with a controlled variable
  • Calculate revenue and profit from real sales data
  • Make a data-grounded business recommendation and explain elasticity in plain language

Safety and evidence note

Read the full activity before beginning. An adult should supervise tools, heat, food, outdoor work, movement, and experiments as appropriate. Completion records that the activity was done; the child’s explanation, work sample, photo, or demonstration is stronger evidence of learning than a completion check alone.

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